Which document declared the independence of the United States?

The document that declared the independence of the United States is the Declaration of Independence. Adopted on July 4, 1776, this pivotal document articulated the colonies' reasons for breaking away from British rule. It laid out the philosophical foundation of the new nation, emphasizing the principles of individual rights and government by consent.

The Declaration serves as a formal announcement to the world, explaining the colonies' decision to sever political ties with Great Britain, highlighting grievances against King George III, and affirming the belief that all men are created equal with certain unalienable rights, such as life, liberty, and the pursuit of happiness. This foundational text not only marked the birth of the United States but also inspired numerous democratic movements worldwide.

In contrast, the Constitution established the framework of the government for the newly independent states, while the Bill of Rights is a collection of amendments safeguarding individual liberties. The Articles of Confederation functioned as the first governing document of the United States but were ultimately replaced due to their ineffectiveness in creating a strong federal government. Thus, the Declaration of Independence is uniquely significant as the document that signified the official separation from British authority.